Internet connection sharing is a build-in feature in OS X 10.10 on Mac mini (Late 2012). I connect to Asus RT-AC51U with 802.11n but NAS with Gigabit Ethernet for better performance. NAS may share internet through Mac mini.
Setup Internet Connection Sharing
- Launch [Sharing] in [System Preferences].
- Set [Share your connection from] to [Wi-Fi] which is the configuration name for 802.11n device.
- Set [To computer using] to [Ethernet] which is for Gigabit Ethernet device.
- Click on [Internet Sharing] to enable.
Now, we need to get the IP address to login to web admin.
Look for IP Address for QTS Device
In terminal, use vi to open system.log:
Mac-mini:~ Amigo$ vi /var/log/system.log
Because my TS-119PII has a server name [ts119pii] in [Control Panel]→[System Settings]→[General Settings]→[Network]→[System Administration] Tab→[Server name], look for string [OFFER sent ts119pii] with command [/] in vi. It find out a log with an IP address assigned to [ts119pii]:
Mar 4 12:39:58 Mac-mini bootpd: OFFER sent ts119pii. 192.168.2.8 pktsize 300
Now, I know TS-119PII is 192.168.2.8.
Look for IP Address for DSM Device
You need to manually look into system.log in OSX. Its server name is available in [Control Panel]→[Network]→[General] Tab→[Server Name] on NAS.
My DS214SE has a server name [DS214SE] and is found in log as:
Mar 4 18:24:32 Mac-mini.local bootpd: OFFER sent DS214SE. 192.168.2.10 pktsize 300
Therefore, DS214SE is 192.168.2.10.
Look for IP Address for WSS Device
You need to manually look into system.log in OSX. Its server name is available in [Control Panel]→[System and Security]→[System]→[Computer name] on NAS.
My Thecus W5000 has a server name [MyWSS5000] and is found in log as:
Mar 29 15:20:01 Mac-mini bootpd: OFFER sent MyWSS5000 192.168.2.11 pktsize 300
Therefore, Thecus W5000 is 192.168.2.11.
Look for IP Address for ADM Device
If you look into system.log in OSX, the server name in [System Information]→[Network] Tab→[Server name] on NAS is not available in the log file. You need to search for “OFFER sent” or <no hostname> and test one by one.
My AS-602T has a server name [AS-602T] and is found in log as:
Apr 8 19:26:05 Mac-mini bootpd: DHCP DISCOVER [bridge100]: 1,10:bf:48:8a:d:c2 Apr 8 19:26:05 Mac-mini bootpd: OFFER sent <no hostname> 192.168.2.15 pktsize 300
After trial and errors, AS-602T is 192.168.2.15.
I also read another solution to find your NAS by broadcasting in AskDifferent: How do I find the IP addresses assigned to devices connected via Internet Sharing on Snow Leopard?
If you cannot find IP address assigned to your NAS, you may stop-then-start your [Internet Sharing] in [Sharing] in [System Preferences] again.
- Apple: Mac Basics: Time Machine backs up your Mac
- Apple: Mac mini (Late 2012) – Technical Specifications
- Apple: OS X
- Apple: OS X Mavericks: Share your Internet connection
- AskDifferent: How do I find the IP addresses assigned to devices connected via Internet Sharing on Snow Leopard?
- Asustor: AS-602T
- Asustor: ASUSTOR Control Center
- Asus: RT-AC51U
- Microsoft: Download Center: Windows Server Essentials Connector for Windows Server 2012 R2
- QNAP: Qfinder
- QNAP: TS-119PII
- Synology: DiskStation DS214SE
- Synology: Synology Assistant Release Notes
- Thecus: Windows Storage Server
- Thecus: W5000
- Wiki: Gigabit Ethernet
- Wiki: IEEE 802.11n-2009
- Wiki: IP address
- Wiki: vi